Catalyzer



A. A. BACKHAUS.

CATALYZER.

APPLICATION FILED JUNE 15, 191B.-

Patented Dec.13, 1921.

UNITED STATES PATENT OFFICE.

ARTHUR-A. BACKHAUS, OF BALTIMORE, MARYLAND, ASSIGNOR TO U. S. INDUSTRIAL ALGOHOL 60-, A CORPORATION OF WEST VIRGINIA- CATALYZER.

To all whom it may concern Be it known that I ARTHUR A. BAOKHAUS, of Baltimore, in the state of Maryland, have invented a certain new and useful Improvement in Catalyzers, and do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates particularly to a catalyzer which is used in the production of aldehydes.

The object of my invention is to provide a catalyzer by means of which aldehydes may be advantageously made, as for example acetaldehyde, by passing alcohol over a catalyzer of this character while heated.

Anotherobject of my invention is to provide a catalyzer containing a catalyzer metal, such foreXalnple, as copper, nickel,

chromium or iron, tobe used for the production of aldehydes in this way.

Further objects of my invention will appear from the detailed description thereof contained hereinafter.

While my invention is capable of being carried out in many difierent ways, for the purpose of illustration I shall describe only one form of catalyzer made in accordance with my invention in the accompanying drawin in which- The gure is a'vertical section of a tube in which the catalyzer is formed in accordance with my invention.

For example, I may add to parts by weight of granular pumice stone, or un glazed porcelain, or charcoal, or terra cotta, which may have a finenesssuch as to pass through a sieve having 10 meshes to the inch, 50 parts by weight of a catalytic metal nitrate, such for example as cupric nitrate or nickelnitrate (Ni(NO or both, dissolved in an equal weight of water. When the absorbent material, such for exam 1e as the pumice stone, has absorbed the nltrate, a quantity of ammonia suflicient to precipitate the metal as hydrate is added. This will be approximately the amount of a water solution of ammonia having a. strength of 26% equal to one-half the weight of the nitrate added.

The mixture is then dried and ignited to form the metal oxide, which will be contained: within and upon the particles of the pumice stone.

Specification of Letters Patent.

. Patented Dec. 13, 1921.

Application filed June 15, 1918. Serial No. 240,222.

The granular catalyzer '1 is then filled into a copper tube 2, and the tube is then heated for several hours at a temperature of 300 C., while a current of hydrogen is being passed through the same over thegranular catalyzer, so that, as a result, the metal oxid,

is reduced to the cor vided metal.

These tubes containing the granular catalyzer may be then used in the production of aldeh des, as for example the production of acct-a dehyde, by passing ethyl alcohol vapors through the tubes at a temperature between 250 C. and 350 C., the acetaldeesponding finely-dihyde and hydrogen vapors being carried off.

pumice stone containing a finely divided highly porous catalytic metal free from metallic oxlds.

3. A catalyzer comprising an inert carrier having interspersed therethrough small particles of a catalytic metal, said particles each being highly porous and free from other metals or metallic oxids.

4. A catalyzer comprising ,a carrier of pumice stone containing interspersed there through small particles of a catalytic metal, said metal being in a highly porous condition and free from other metals and metallic oxids.

, In testimony that I claim the foregoing I have hereunto set my hand.

ARTHUR A. BAOKHAUS.

Witnesses:

JOHN P. GISCHEL, ARTHUR WRIGHT. 

